3.2.2 Synchronization Type
Synchronization is a feature that controls the activation of notification appliances in such a way that
all devices turn on and off at exactly the same time. Unsynchronized strobe activation can be a
potential hazard and can cause confusion. The HPFF power supplies can be programmed to operate
with a variety of manufacturers' devices.
DIP switches 5 and 6 are used to select the synchronization type when switches 1 & 2 and 3 & 4 are
programmed for the power supply to be a sync generator.
3.2.3 Trouble Reporting Delay with an AC Failure
There are three ways to report trouble of AC loss or brownout. The transfer of TB2's AC FAIL
contacts, TB2's TROUBLE contacts, and the opening of the FACP or initiating device SIGNAL 1's
and SIGNAL 2's connections on TB3.
Both SIGNAL 1's and SIGNAL 2's +IN to +OUT connections are opened to disconnect Class B
ELR's or the positive wire run of Class A configuration. They remain closed in the alarm state,
even if a trouble condition exists, to pass the alarm signal if multiple units are connected.
Therefore, supervised monitoring TB2's AC FAIL and TROUBLE contacts is necessary for UL 864
9th Edition compliance.
DIP switch 7 set to the ON position will delay the transfer of the TB2's TROUBLE contacts
and the opening of connections on TB3 for 2 hours (unless in alarm state), upon an AC loss or
DIP switch 7 set to the OFF position will have no delay in the transfer of the TB2's TROUBLE
contacts and the opening of ELR connections on TB3 (unless in alarm state), upon an AC loss
TB2's AC FAIL contacts will always immediately transfer if an AC loss or brownout occurs,
regardless of DIP switch 7 setting. These contacts can be used for local reporting to the protected
premises, in compliance with UL 864 9th Edition.
The DIP switch 7 setting of a 2 hour delay of TB2 TROUBLE contacts can be used for remote
station, central station, or proprietary protected premises reporting, in compliance with UL 864 9th
NOTE: Always use supervised monitoring of TB2's AC FAIL and TROUBLE contacts and to set
DIP switch 7 for a delay for UL 864 9th Edition compliance.
HPFF12 NAC Expander — P/N 53576:B 11/24/2010
DIP Switch 5
DIP Switch 6
Table 3.4 Synchronization Type for DIP Switches 5 and 6
Cooper Wheelock devices
System Sensor devices
Amseco and Faraday devices